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Team 14026: Subsystem Design Review

Team 14026: Subsystem Design Review. Mike Allocco, Soham Chakraborty, Leslie Havens, Danielle Koch, Andrew Miller, Kristeen Yee, Stephanie Zambito. Agenda. Week 6 Matrix Week 6 Functional Decomposition New Functional Decomposition Week 6 Proposal Week 6 System Designs

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Team 14026: Subsystem Design Review

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  1. Team 14026: Subsystem Design Review Mike Allocco, Soham Chakraborty, Leslie Havens, Danielle Koch, Andrew Miller, Kristeen Yee, Stephanie Zambito P14026_Subsystem Review 10/29/13

  2. Agenda • Week 6 Matrix • Week 6 Functional Decomposition • New Functional Decomposition • Week 6 Proposal • Week 6 System Designs • Pugh Chart for Systems • Modeling Lung Decomposition • Modeling Lung Pugh Chart • Proposal Number 1 • Bill of Materials-High Level • Simulations of Breaths and Compressions • Measurements – Pressure, Airflow, Oxygen Concentration • Computer Interface and Power • Programming Flow Charts • Overall BOM • Proposal Number 2 • Team Action Items • Week 6 Test Plan • New Test Plan • New Risks • Schedule • Next Steps P14026_Subsystem Review 10/29/13

  3. Week 6 Matrix P14026_Subsystem Review 10/29/13

  4. Week 6 Functional Decomposition P14026_Subsystem Review 10/29/13

  5. New Functional Decomposition P14026_Subsystem Review 10/29/13

  6. Week 6 Process Proposal P14026_Subsystem Review 10/29/13

  7. Week 6 Functional System Designs Testing Calibration P14026_Subsystem Review 10/29/13

  8. System PUGH P14026_Subsystem Review 10/29/13

  9. Model Lung Decomposition Respond as a real human lung would Intake air flow Model human lung response to inputs Expel air Receive air from PEV Measure intake from sensors Adjustable air resistance Adjustable lung compliance Feedback to PEV Timing (clock) Pressure Sensor Volume sensor Air flow sensor P14026_Subsystem Review 10/29/13

  10. Simulated Lung PUGH Chart P14026_Subsystem Review 10/29/13

  11. Subsystem Proposal 1 P14026_Subsystem Review 10/29/13

  12. High Level Bill of Materials P14026_Subsystem Review 10/29/13

  13. High Level Bill of Materials P14026_Subsystem Review 10/29/13

  14. Bill of Materials P14026_Subsystem Review 10/29/13

  15. Model Lung Proposal • CONTROL VOLUME But the PEV will not be directly inflating a lung… P14026_Subsystem Review 10/29/13

  16. Model Lung Proposal • AIRWAY RESISTANCE P14026_Subsystem Review 10/29/13

  17. Model Lung Proposal • PRESSURE APPLICATION P14026_Subsystem Review 10/29/13

  18. Model Lung Proposal • COMPLIANCE CURVE • 1. Boyle’s Law: • 2. For most materials: • 3. For the lung: 1 2 3 P14026_Subsystem Review 10/29/13

  19. Model Lung Proposal • NUMERICAL INTEGRATION • Several possible algorithms to be selected based on: -Acceptable Error -Speed of Sensors P14026_Subsystem Review 10/29/13

  20. Model Lung Proposal • ACTUTATION • Actuated syringe pump corrects pressure to fit the calculated compliance curve P14026_Subsystem Review 10/29/13

  21. Simulated Breath Designs • Need to be able to trigger assist mode on the PEV • Create Negative Pressure • Possible designs: • EMT Hand Pump • Syringe Pump • Turkey Baster P14026_Subsystem Review 10/29/13

  22. SIMULATED BREATH Proposal • Syringe Pump • Proof of Concept • Creating Negative Pressure • Creating controlled motion No to little air Pull handle out Wheel & Motor Air is pulled in Arm P14026_Subsystem Review 10/29/13

  23. Simulated Compressions Designs • Need to release air, the PEV is measuring compressions based on pressure • Possible designs: • EMT Hand Pump • Syringe Pump • Turkey Baster P14026_Subsystem Review 10/29/13

  24. Simulated compressions designs • Syringe Pump • Proof of Concept • When doing compressions, air is pushed out of the body Air is pushed out Air is in the syringe P14026_Subsystem Review 10/29/13

  25. Measuring Pressure • Pressure Transducer • Sensor Technics • Operating range: varies from 0-10,25,70,100 mbar (1mbar~1.01cmH2O) • Accuracy: ±.20% Full Scale • 17 connection variations and 5 output signal variations • Max Response time: • ≤25 mbar – 35ms • ≥25 mbar – 5ms • Dwyer • Operating Range: 0-1 psi ±.25% Full Scale • 5ms Response time • $149.00 each • Differential Pressure Transducer • Cole-Parmer • Operating Range- 0-100” H20 • Accuracy- ±1% Full Scale (1 inH20) • $172.00 P14026_Subsystem Review 10/29/13

  26. Measuring Pressure Summary P14026_Subsystem Review 10/29/13

  27. Measuring Air Flow & Volume Measuring Air Volume • Volume = Compliance*[Pressure – Flow*Resistance] • Boyle’s Law: As volume of gas increases; pressure decreases Q = A * V W = *Q P14026_Subsystem Review 10/29/13

  28. Measuring Oxygen Concentration • Total Atmospheric Air Pressure: 1033.23 cmH20 • 21% is oxygen concentration • Vernier O2 Gas Sensor • Cost: $188 • Accuracy (at standard pressure 760 mmHg): +/- 1% volume O2 • Response time: ~12 seconds to 90% of final value • http://www.vernier.com/files/manuals/o2-bta.pdf P14026_Subsystem Review 10/29/13

  29. High Level Bill of Materials P14026_Subsystem Review 10/29/13

  30. Computer Interface & Power source subassemblies P14026_Subsystem Review 10/29/13

  31. EMANT300 Low Cost USB 24 DAQ Module • Up to 6 channels of differential multiplexed ADC • Single channel 22 bit @ 10 samples/sec • Single channel 16 bit waveform @ 2500 samples/sec • 1 channel of 8-bit D/A conversion • 8 digital IO channels • One 16-bit general-purpose counter or 16-bit PWM • USBconnection • 25 pin D-Sub connects to physical world • Application adaptors with instructional guides • LabView compatible • Cost = $99.00 http://www.emant.com/251004.page P14026_Subsystem Review 10/29/13

  32. Programming Flow Chart Automatic Mode P14026_Subsystem Review 10/29/13

  33. Programming Flow Chart Assist Mode P14026_Subsystem Review 10/29/13

  34. Programming Flow Chart CPR Mode P14026_Subsystem Review 10/29/13

  35. Programming Flow chart Manual Mode P14026_Subsystem Review 10/29/13

  36. Estimated Costs Without Shipping P14026_Subsystem Review 10/29/13

  37. Subsystem Proposal 2 P14026_Subsystem Review 10/29/13

  38. Test Lungs • Siemens Test Lung 190: • $222.00 – amazon.com • Adult • Volume of 1 Liter • Non-adjustable compliance and resistance • IMT Easy Lung: • Non-adjustable compliance and resistance • $172 • Adult • Newport Medical • Neonatal • $101.43 • Non adjustable resistance • Non adjustable compliance (0.8 mL/cmH20) • Capacity up to 60 mL • Can simulate breathing effort. P14026_Subsystem Review 10/29/13

  39. Test Lungs Continued • IMT Smart Lung • Widely adjustable compliance, resistance, and leakage. • Adult and Infant models (sold separately). • $654.88 (each) • Price to Performance ratio is best on the market. P14026_Subsystem Review 10/29/13

  40. Team Action Items P14026_Subsystem Review 10/29/13

  41. Week 6 Test Plan • Test Mass Flow Sensor • Verify accuracy of the data • Test Pressure Sensor • Verify accuracy of the data • Test Lung Simulation • Verify lung operations • Test Calibration • Verify accuracy of testing system P14026_Subsystem Review 10/29/13

  42. New Test Plan • LTV Series 900 • A PEV that tests itself • Can be calibrated • Measures air flow • Measures PEEP • Measures pressure • Measures breaths per minute • Has an assist mode • Has a low battery alarm • Can set the level in which alarms are set off • Tubes need to be replaced – currently a number of holes P14026_Subsystem Review 10/29/13

  43. http://www.cookchildrens.org/SiteCollectionDocuments/HomeHealth/Education/RespiratoryTherapy/Ventilator/CCHH_Ventilator_LTV950SeriesOperatorsManual.pdfhttp://www.cookchildrens.org/SiteCollectionDocuments/HomeHealth/Education/RespiratoryTherapy/Ventilator/CCHH_Ventilator_LTV950SeriesOperatorsManual.pdf

  44. LTV 900 P14026_Subsystem Review 10/29/13

  45. New Risks Identified P14026_Subsystem Review 10/29/13

  46. Schedule P14026_Subsystem Review 10/29/13

  47. Next Steps • Meeting with Professors • Dr. Wellin • Dr. Kempski • Mr. Hanzlik • Dr. Robinson • Dr. Slack • Dr. Lamkin-Kennard • Contact customer support for LTV about data acquisition • Detailed Engineering Analysis of subsystem proposal chosen by our customers. P14026_Subsystem Review 10/29/13

  48. Questions? P14026_Subsystem Review 10/29/13

  49. Backup Slides P14026_Subsystem Review 10/29/13

  50. Assigned Responsibilities • Andrew – Choosing sensors, flow analysis, sensor integration • Danielle – Flow analysis, methods of fabrication • Kris – Project planning, calibrate LTV, CAD • Leslie – Choosing sensors, sensor integration • Mike – Start coding, Flow analysis, CAD • Soham – Choosing DAQ board, sensor integration • Stephanie – Choosing DAQ board, coding P14026_Subsystem Review 10/29/13

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